$ git clone -n https://src.fedoraproject.org/rpms/xmlgraphics-commons.git /var/lib/mock/f41-build-side-1-2908038-34730/root/chroot_tmpdir/scmroot/xmlgraphics-commons
Cloning into '/var/lib/mock/f41-build-side-1-2908038-34730/root/chroot_tmpdir/scmroot/xmlgraphics-commons'...
$ git fetch origin 0b7caab5a58649a30abddfdd3b18c091947482b5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xmlgraphics-commons
 * [new ref]         0b7caab5a58649a30abddfdd3b18c091947482b5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0b7caab 2.10